The Krebs cycle starts with the formation of | vedclass

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(D) The Krebs cycle (also known as the citric acid cycle) begins with the condensation reaction of an acetyl group from acetyl $CoA$ $(2C)$ with oxalo

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Acetyl $CoA$ and oxaloacetic acid

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(D) The Krebs cycle (also known as the citric acid cycle) begins with the condensation reaction of an acetyl group from acetyl $CoA$ $(2C)$ with oxaloacetic acid $(4C)$ and water to form citric acid $(6C)$.This reaction is catalyzed by the enzyme citrate synthase.The reaction is: $	ext{Acetyl } CoA + 	ext{Oxaloacetic acid} + H_2O \xrightarrow{	ext{Citrate synthase}} 	ext{Citric acid} + CoA$.

Column-$I$	Column-$II$
$(a)$ $4$ $C$ compound	$(1)$ Acetyl $CoA$
$(b)$ $2$ $C$ compound	$(2)$ Pyruvate
$(c)$ $5$ $C$ compound	$(3)$ Citric acid
$(d)$ $3$ $C$ compound	$(4)$ $\alpha$-Ketoglutaric acid
	$(5)$ Malic acid

The Krebs cycle starts with the formation of a six-carbon compound by the reaction between:

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